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Finding the Fourth Proportional to 705,559.96, 973,690.80 and 383,288.50

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Solution

The fourth proportional to 705,559.96, 973,690.80 and 383,288.50 is: 528,947.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    705,559.96 : 973,690.80 = 383,288.50 : x
  2. Step 2: Convert to fraction form
    705,559.96/973,690.80 = 383,288.50/x
  3. Step 3: Cross multiply
    705,559.96x = 973,690.80 × 383,288.50
  4. Step 4: Simplify right side
    705,559.96x = 373,204,486,195.80
  5. Step 5: Solve for x
    x = 373,204,486,195.80/705,559.96
  6. Step 6: Final answer
    x = 528,947.94

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.